超声造影在肝脏良恶性肿瘤鉴别诊断中的价值

目的:探讨超声造影在肝脏良恶性肿瘤鉴别诊断中的价值。方法:采用超声造影技术对83个肝脏肿瘤患者123个病灶进行检查,并比较不同病变的肝脏超声造影增强的特点。结果:所有103个肝脏恶性肿瘤动脉期或门脉期均表现为快速增强,98个(95%)延迟期快速退出,仅有5个(5%)缓慢退出。其中69个肝细胞癌病灶中53个(77%)表现为动脉期整体均匀增强,16个(23%)由于病灶中央有低回声表现为不均匀增强,66个(96%)表现迅速快退,仅3个(4%)表现为缓慢退出。在34个转移性肝癌病灶中,24个(71%)表现为动脉期不均匀增强,10个(29%)表现为动脉期或门脉期的均匀增强,32个(94%)表现为快速退出,2个(6%)表现为缓慢退出。而另外在20个肝良性肿瘤中,18个(90%)表现为缓慢不均匀增强,14个(70%)表现为轻度增强,20个(100%)表现为缓慢退出。结论:超声造影有助于肝脏良恶性肿瘤的鉴别。

Contrast-enhanced ultrasound in the diagnosis of benign and malignant hepatic tumors

Objective: To determine the value of contrast-enhanced ultrasound in the diagnosis of benign and malignant hepatic tumors. Methods: A total of 83 patients with 123 focal liver lesions (FLLs) underwent contrast enhanced ultrasound (CEUS) examination. The contrast enhanced characterization of FLLs were compared. Results: All the 103 lesions in hepatocallular carcinoma improved quickly in the arterial phase or portal phase. Altogether 98 lesions (95%) washed out during the late phase but the rest 5 lesions (5%) did not. Of the 69 lesions of hepatocellular carcinoma, 53(77%) enhanced global in the arterial phase or portal phase, and the rest 16 (23%) showed inhomogeneous enhancement but no enhancement in the central area during arterial phase or portal phase. A total of 66(96%) presented wash-out during the late phase, and 3(4%) had no wash-out. Of the 34 lesions of metastatic hepatic carcinoma, 24(71%)presented inhomogeneous enhancement in the arterial phase or portal phase, 10(29%) enhanced globally in the arterial phase or portal phase, 32 (94%)presented wash-out during the late phase, and 2(6%) had no wash-out in the late phase. Of the 20 lesions of benign hepatic tumor, 18(90%) presented inhomogeneous enhancement slowly in the arterial phase or portal phase, 14 (70%) slightly enhanced, and 20 (100%) presented no wash-out in the the late phase. Conclusion: CEUS can improve the accuracy of diagnosis of benign and malignant hepatic tumors.